Havigerová, J. M., Loudová, I., Košek-Bartošová, I., Kocourková, K., & Podubecká, D. (2023). Keeping the line in transition years: Comparison of preschoolers and nine graders. International Journal of Innovative Research in Education, 10(1), 37–45. https://doi.org/10.18844/ijire.v10i1.8959